Home / 6,631.68-9,148.16-3,977.36

Finding the Fourth Proportional to 6,631.68, 9,148.16 and 3,977.36

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Solution

The fourth proportional to 6,631.68, 9,148.16 and 3,977.36 is: 5,486.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,631.68 : 9,148.16 = 3,977.36 : x
  2. Step 2: Convert to fraction form
    6,631.68/9,148.16 = 3,977.36/x
  3. Step 3: Cross multiply
    6,631.68x = 9,148.16 × 3,977.36
  4. Step 4: Simplify right side
    6,631.68x = 36,385,525.66
  5. Step 5: Solve for x
    x = 36,385,525.66/6,631.68
  6. Step 6: Final answer
    x = 5,486.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.